| Article | |
| Report number | arXiv:0803.2349 ; CERN-PH-TH-2008-052 ; CERN-PH-TH-2008-052 |
| Title | Ultra-cold WIMPs: relics of non-standard pre-BBN cosmologies |
| Related title | Ultra-cold weakly interacting massive particles: Relics of non-standard pre-big-bang-nucleosynthesis cosmologies |
| Author(s) | Gelmini, Graciela B. (UCLA) ; Gondolo, Paolo (Utah U.) |
| Publication | 2008 |
| Imprint | 2008-03 |
| Number of pages | 6 |
| In: | JCAP 0810 (2008) 002 |
| DOI | 10.1088/1475-7516/2008/10/002 |
| Subject category | Astrophysics and Astronomy |
| Abstract | Weakly interacting massive particles (WIMPs) constitute one of very few probes of cosmology before big bang nucleosynthesis (BBN). We point out that in scenarios in which the Universe evolves in a non-standard manner during and after WIMP kinetic decoupling, the horizon mass scale at decoupling can be smaller and the dark matter WIMPs can be colder than in standard cosmology. This would lead to much smaller first objects in hierarchical structure formation. In low reheating temperature scenarios the effect may be large enough to noticeably enhance indirect detection signals in GLAST and other detectors, by up to two orders of magnitude. |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib. 1.0) publication: © 2008-2025 IOP Publishing Ltd and SISSA |
Corresponding record in: Inspire
记录创建於2008-03-18，最後更新在2023-03-14
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